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Stable Condition In Electrophoretic Deposition (EPD) Of Beta-Sialon

Habibollah Alikhani*1, Alireza Taherizadeh2, Mahboubeh Kargar3 and Seyed Jafar Mousavi3

Electrophoretic deposition is a process mainly depended on colloidal stability of deposition suspension. In this work, colloidal stability of submicron beta-sialon in ethanol was studied. Zeta potential and viscosity of beta-sialon powder suspension as a function of pH were measured in this solvent. The effect of addition of PVA polymer to the suspension was also investigated. Viscosity was measured as an indicator of dispersion quality of solvent. The effect of polymer addition to the beta-sialon suspension on zeta potential was also determined as a function of pH. Lastly, Electrophoretic Deposition (EPD) was carried out using the identified optimum suspension conditions. The optimum working condition was also determined